Results 91 to 100 of about 319,225 (348)

Analysis of a first order phase locked loop in the presence of Gaussian noise [PDF]

open access: yes
A first-order digital phase locked loop is analyzed by application of a Markov chain model. Steady state loop error probabilities, phase standard deviation, and mean loop transient times are determined for various input signal to noise ratios.
Blasche, P. R.
core   +1 more source

Bandwidth controller for phase-locked-loop [PDF]

open access: yes, 1992
A phase locked loop utilizing digital techniques to control the closed loop bandwidth of the RF carrier phase locked loop in a receiver provides high sensitivity and a wide dynamic range for signal reception. After analog to digital conversion, a digital
Brockman, Milton H.
core   +1 more source

Peptide‐Induced Ferroelectricity in Charge‐Transfer Supramolecular Materials

open access: yesAdvanced Materials, EarlyView.
Bio‐inspired supramolecular charge‐transfer amphiphiles self‐assemble into nanoribbons in water, where peptide chirality‐induced symmetry breaking generates robust ferroelectricity across multiple systems. These water‐processable organic ferroelectrics also enhance neuronal outgrowth and electrophysiological maturity, offering a versatile strategy for ...
James V. Passarelli   +15 more
wiley   +1 more source

An Improved Single Phase-locked Loop Based on Synchronous Reference Frame

open access: yesKongzhi Yu Xinxi Jishu, 2019
Accurate tracking of phase angle, frequency and amplitude of the utility voltage is essential to ensure correct operation of grid connected inverters. The commonly used single phase-locked loop(SPLL) has poor dynamic characteristics due to the problem of
TANG Jianyu   +4 more
doaj  

An Efficient Phase-Locked Loop for Distorted Three-Phase Systems

open access: yesEnergies, 2017
This paper proposed an efficient phase-locked loop (PLL) that features zero steady-state error of phase and frequency under voltage sag, phase jump, harmonics, DC offsets and step-and ramp-changed frequency. The PLL includes the sliding Goertzel discrete
Yijia Cao   +4 more
doaj   +1 more source

Observation of Dislocation Bound States and Skin Effects in Non‐Hermitian Chern Insulators

open access: yesAdvanced Materials, EarlyView.
Experimental observation of the dislocation‐induced bound states and skin effects is demonstrated in a line‐gap non‐Hermitian acoustic lattice. By utilizing active meta‐atoms to measure the full complex spectrum and biorthogonal eigenstates, the study reveals the exceptional‐point‐driven melting of defect modes.
Jia‐Xin Zhong, Bitan Roy, Yun Jing
wiley   +1 more source

Phase Length Optical Phase-Locked-Loop Sensor [PDF]

open access: yes
The invention is a device that provides a high resolution measurement of the change in optical phase length from the device optical system source to an optical reflector.
Heyman, Joseph S.
core   +1 more source

Electronic phase-locked-loop speed control system is stable [PDF]

open access: yes, 1966
Phase locked-loop circuit is used for playback motors in digital tape recorders where the reproducer output remains in exact synchronism with an external reference clock over extended periods.
Stone, F. A.
core   +1 more source

Universal Conductance Fluctuations in Quantum Anomalous Hall Insulators

open access: yesAdvanced Materials, EarlyView.
Universal conductance fluctuations are observed in mesoscopic quantum anomalous Hall insulators. Two distinct fluctuation patterns are identified, arising from different interference processes of bulk and chiral edge states, respectively. These findings unveil rich quantum interference phenomena in quantum anomalous Hall insulators and provide insights
Peng Deng   +11 more
wiley   +1 more source

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